EP3601948A1 - Détection de surcharge dans un composant de train de roulement - Google Patents
Détection de surcharge dans un composant de train de roulementInfo
- Publication number
- EP3601948A1 EP3601948A1 EP18706704.6A EP18706704A EP3601948A1 EP 3601948 A1 EP3601948 A1 EP 3601948A1 EP 18706704 A EP18706704 A EP 18706704A EP 3601948 A1 EP3601948 A1 EP 3601948A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- overload detection
- sensor
- detection according
- chassis component
- cage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 17
- 239000000725 suspension Substances 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 240000006829 Ficus sundaica Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000001447 compensatory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Definitions
- the invention relates to an overload detection according to the preamble of patent claim 1.
- Modern motor vehicles, especially cars, are increasingly equipped with assistance systems, on the one hand relieve the driver but on the other hand allow less feedback from the chassis to the driver. This may result in a driver not noticing a defect, such as a bent tie rod or a deformed control arm.
- a defect such as a bent tie rod or a deformed control arm.
- the residual service life after plastic deformation of suspension components is sometimes considerably reduced.
- a driver due to the compensatory effect of the assistance systems, pre-damages the tie rod, e.g. not noticed by an obstacle crossing and later for break and accident.
- DE 10 2010 043 778 A1 describes a link element with a mechanical overload protection, which leads to a clearly noticeable steering play when in effect, but which, as already stated, would be compensated by an assistance system and thus would not be recognizable to the driver.
- DE 10 2013 018 526 A1 relates to a system for detecting a change in an axle setting of a motor vehicle.
- the system has a force measuring unit or an angle measuring unit which sends a signal to an evaluation device.
- the evaluation device compares the instantaneous signal with a reference signal, wherein an exceeding of the reference signal is interpreted as an overload of the vehicle axle.
- the object of the present invention is to provide an overload detection in which the problems known from the prior art are eliminated.
- the object is achieved in that the sensor is designed as a deformation detection sensor for a single chassis component.
- the deformation of the chassis component is detected as a reference variable. In comparison to the prior art, therefore, a size is used that would directly detect a fault, which also leads to a change in the chassis geometry or even a claim. Furthermore, the load is determined on a single component. A compensation effect within the chassis can not occur.
- the senor comprises a plurality of individual sensors. On the one hand, there is some redundancy and measurement errors can be detected.
- the individual sensors are arranged in different planes relative to one another.
- the individual sensors form a cage.
- the cage has only a low structural strength and thus does not reduce the quality of the measurement signal.
- the cage is held on one side in the longitudinal direction of the chassis component. Axial tension could also falsify the measurement signal.
- the cage has an annular attachment portion.
- the sensors themselves are not loaded with regard to the attachment function.
- the attachment portion is fixed by a fastening means of the chassis component.
- the cage can z. B. consist of a plastic which is clamped by a union nut.
- the attachment portion is designed to be radially elastic, for example by having this slot-shaped recesses.
- the chassis component is divided into two parts and forms a parting line on which the attachment portion is arranged. Consequently, no additional attachment means for the sensor is needed.
- fastening section and the fastening means are firmly connected to one another. This significantly simplifies handling during the assembly process.
- the senor is arranged at least in the vicinity of the region of the chassis component with the lowest structural strength.
- FIG. 1 Exemplary schematic representation of a chassis
- Fig. 2 tie rod with bearings as an assembly
- chassis 1 for a vehicle side comprises a body side via joints 3; 5 attached wishbone 7 to which a wheel 9 is arranged for a wheel 11.
- a vibration damper 13 and a vehicle support spring 15 shown only in principle a vehicle body 17 is supported on the chassis 1 from.
- the chassis 1 is designed to be steerable and comprises a steering device 19 shown only schematically with an adjoining chassis component 21.
- the chassis component 21 is formed in this embodiment as a tie rod 21, the end one bearing 23; 25 has.
- a steering lever 27 is arranged, via which an axial movement of the tie rod 21 is converted into a pivoting movement of the wheel carrier 9 and the wheel 11.
- the invention would also be applicable to a non-steerable chassis.
- FIG. 2 shows the track rod 21 according to FIG. 1 in a corresponding installation position.
- the tie rod 21 is divided into two and comprises a threaded shaft 29 for length adjustment, s. Fig. 3, to set a defined angle between the tie rod 21 and the angled steering lever 27 thereto.
- the tie rod 21 has at least one key surface 31 for rotating the tie rod when a threaded connection 33 is closed with the steering device 19.
- the tie rod 21 tends to be a more sensitive component, because a deformation directly affects the steering behavior but also the directional stability of the vehicle.
- Figures 4 and 5 are limited to a portion of the tie rod in the region of the threaded connection 33 to the bearing 23.
- the track rod 21 has for overload detection via a sensor 35 which detects a desired state variable of the Fahrtechniksbau- part or the tie rod 21.
- the sensor is designed as a deformation detection sensor for the tie rod 21.
- the sensor comprises a plurality of individual sensors 37, which extend in the longitudinal direction of the tie rod 21. Distributed in the circumferential direction, the individual sensors are thus arranged in different planes to each other.
- the individual sensors 37 can follow different measuring methods. Basically, a change in length of an individual sensor leads to a changed electrical signal, which is supplied to an evaluation device, not shown. If the tie rod 21 is bent, then a deformation occurs just as in a torsion, wherein a torsion of the tie rod 21 due to the end bearing 23; 25 is very unlikely.
- the individual sensors 37 form a cage 39 or the individual sensors 37 are supported on a cage.
- the cage 39 with its longitudinal webs 41 and end-side bearing ring 43 is preferably made of a plastic, so that the attachment of the individual sensors 37 can already be made in the context of the injection process.
- the inner diameter of the cage 39 is dimensioned so that a rotation to the tie rod would be possible.
- the cage is held on one side in the longitudinal direction of the chassis component, d. H. the end in the direction of the bearing 23 is fixed and the other end in the direction of the steering lever 27 is free.
- This determination of the breakpoint is determined for this variant, but can also be implemented differently in another embodiment of the axis. With the one-sided fixation axial stresses are to be avoided within the sensor 35.
- the cage 39 has an annular attachment portion 45 that includes a flange portion 47 or a cone portion.
- the fastening section 45 in turn is held by a fastening means 49, in this case a threaded nut of the chassis component, which engages in the threaded shank 29 and thus fixes the cage 39.
- the attachment portion 45 is thus arranged on a parting line 51 of the two-part chassis component, namely between the tie rods 21 and the threaded shaft 29 and the bearing 23. (Fig. 3)
- the attachment portion 45 is preferably made radially elastic, for example by the attachment portion 45 having a number of recesses 53 or slots which are arranged distributed in the circumferential direction.
- attachment portion 45 and the attachment means 49 are fixedly connected to each other by the attachment portion 45 is molded onto the attachment means 49. (Fig. 5)
- the sensor 35 is preferably arranged at least in the vicinity of the region of the chassis component or of the tie rod 21 with the lowest structural strength. This ensures that even small deformations that would not yet be measurable on other components or component sections of the tie rod are now also detectable.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Power Steering Mechanism (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017204729.1A DE102017204729B4 (de) | 2017-03-21 | 2017-03-21 | Überlasterkennung bei einem Fahrwerksbauteil |
PCT/EP2018/053964 WO2018171992A1 (fr) | 2017-03-21 | 2018-02-19 | Détection de surcharge dans un composant de train de roulement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3601948A1 true EP3601948A1 (fr) | 2020-02-05 |
EP3601948B1 EP3601948B1 (fr) | 2023-08-09 |
Family
ID=61258218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18706704.6A Active EP3601948B1 (fr) | 2017-03-21 | 2018-02-19 | Syteme de détection de surcharge dans un composant de train de roulement |
Country Status (7)
Country | Link |
---|---|
US (1) | US11333493B2 (fr) |
EP (1) | EP3601948B1 (fr) |
JP (1) | JP2020511628A (fr) |
KR (1) | KR102528251B1 (fr) |
CN (1) | CN110418939B (fr) |
DE (1) | DE102017204729B4 (fr) |
WO (1) | WO2018171992A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020212854A1 (de) | 2020-10-12 | 2022-04-14 | Volkswagen Aktiengesellschaft | Elektromechanische Kraftfahrzeuglenkung |
US12000740B2 (en) * | 2020-11-17 | 2024-06-04 | Board Of Trustees Of Michigan State University | Sensor apparatus |
DE102021201282A1 (de) | 2021-02-11 | 2022-04-14 | Zf Friedrichshafen Ag | Fahrwerkbauteil für ein Fahrwerk eines Fahrzeugs und mit einer Werkzeugaufnahme sowie Werkzeug für die Montage eines solchen Fahrwerkbauteils |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5481184A (en) * | 1991-12-31 | 1996-01-02 | Sarcos Group | Movement actuator/sensor systems |
DE4127209C2 (de) * | 1991-08-16 | 1996-05-23 | Mehnert Walter Dr | Geber zur induktiven Erzeugung eines Meßsignals |
DE4215306A1 (de) * | 1992-05-09 | 1993-11-11 | Philips Patentverwaltung | Dehnungstransformator zur Drehmomentmessung einer zylindrischen Welle |
JP2654602B2 (ja) * | 1992-12-25 | 1997-09-17 | 日本電気株式会社 | 半導体力学量センサ |
US5753828A (en) * | 1996-06-18 | 1998-05-19 | Ei Sensors & Systems Company, Inc. | Shaft torque measuring system |
JP2003104217A (ja) * | 2001-10-01 | 2003-04-09 | Denso Corp | パワーステアリング装置 |
FR2869966B1 (fr) * | 2004-05-04 | 2006-07-14 | Snr Roulements Sa | Roulement capteur de deformations comprenant au moins trois jauges d'echantillonnage d'une transformee fourier discrete |
DE102005027251A1 (de) | 2005-06-13 | 2006-12-28 | Volkswagen Ag | Fahrzeugteil-Sensorvorrichtung und Verfahren zum Erfassen einer Formveränderung eines Fahrzeugteils |
JP2007057257A (ja) * | 2005-08-22 | 2007-03-08 | Ntn Corp | センサ付車輪用軸受 |
GB0620944D0 (en) * | 2006-10-20 | 2006-11-29 | Insensys Ltd | Curvature measurement moving relative to pipe |
JP2008298515A (ja) * | 2007-05-30 | 2008-12-11 | Shisuko:Kk | 型締力測定センサ |
DE102009008837B4 (de) | 2009-02-13 | 2013-02-21 | Audi Ag | Kraftfahrzeug mit längenveränderlicher Spurstange |
DE102009032991A1 (de) * | 2009-06-23 | 2010-12-30 | Bless, Werner M. | Lenkwellenbauteil, Lenkwelle und Herstellungsverfahren |
DE102010031064A1 (de) * | 2010-07-07 | 2012-01-12 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Erfassung eines Drehmoments |
DE102010043778A1 (de) | 2010-11-11 | 2012-05-16 | Zf Friedrichshafen Ag | Lenkerelement mit Überlastsicherung |
DE102011089605A1 (de) * | 2011-12-22 | 2013-06-27 | Zf Friedrichshafen Ag | Vorrichtung mit Messeinrichtung zum Messen von Kräften und/ oder Belastungen |
US10022190B2 (en) * | 2012-04-04 | 2018-07-17 | Universite Libre De Bruxelles | Optical force transducer |
DE102012107391A1 (de) * | 2012-08-13 | 2014-02-13 | Zf-Lenksysteme Gmbh | Lenkwelle für ein Lenksystem |
DE102013018526A1 (de) | 2013-11-04 | 2015-05-07 | Man Truck & Bus Ag | System zur Erfassung einer Änderung einer Achseinstellung eines Kraftfahrzeugs |
US9487231B2 (en) | 2013-11-26 | 2016-11-08 | Steering Solutions Ip Holding Corporation | Tie rod force sensing systems and methods |
CN104764810B (zh) * | 2015-02-09 | 2018-01-05 | 四川大学 | 用于岩石损伤测试的组装式声发射测试传感器定位装置 |
DE102015102233B4 (de) * | 2015-02-17 | 2019-05-29 | Asm Automation Sensorik Messtechnik Gmbh | Positionssensor und damit erstellte Messanordnung |
-
2017
- 2017-03-21 DE DE102017204729.1A patent/DE102017204729B4/de active Active
-
2018
- 2018-02-19 KR KR1020197027196A patent/KR102528251B1/ko active IP Right Grant
- 2018-02-19 CN CN201880018205.9A patent/CN110418939B/zh active Active
- 2018-02-19 WO PCT/EP2018/053964 patent/WO2018171992A1/fr unknown
- 2018-02-19 US US16/482,899 patent/US11333493B2/en active Active
- 2018-02-19 JP JP2019533425A patent/JP2020511628A/ja active Pending
- 2018-02-19 EP EP18706704.6A patent/EP3601948B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
CN110418939B (zh) | 2022-06-28 |
US20200011663A1 (en) | 2020-01-09 |
EP3601948B1 (fr) | 2023-08-09 |
US11333493B2 (en) | 2022-05-17 |
CN110418939A (zh) | 2019-11-05 |
DE102017204729A1 (de) | 2018-09-27 |
KR102528251B1 (ko) | 2023-05-03 |
WO2018171992A1 (fr) | 2018-09-27 |
KR20190128174A (ko) | 2019-11-15 |
JP2020511628A (ja) | 2020-04-16 |
DE102017204729B4 (de) | 2019-01-10 |
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